Malware Insights
This PDF file was flagged as malicious by an ML classifier and contains a large number of external links, a technique often used for SEO farms or to redirect users to malicious sites. One of the embedded URLs, 'https://traffking.ru/123?utm_term=fundamentals+of+hvacr+pdf', and another from the link farm, 'https://wojatobarub.weebly.com/uploads/1/3/4/6/134612389/zanenovalifawik.pdf', are considered high-priority IOCs. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to compromise users through external resources, aligning with spearphishing attachment tactics.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 4
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL https://traffking.ru/123?utm_term=fundamentals+of+hvacr+pdf
- https://wojatobarub.weebly.com/uploads/1/3/4/6/134612389/zanenovalifawik.pdf
- https://rukifutotusiz.weebly.com/uploads/1/3/4/6/134685592/5115779.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/webipejonavuv/ff8_remaster_100_guide.pdf
- https://uploads.strikinglycdn.com/files/a3000b23-486c-4558-b133-342c1fe18363/self_portrait_norman_rockwell.pdf
- https://uploads.strikinglycdn.com/files/5baec3a7-eae6-47f4-98ed-72319c568e56/skyward_family_access_walled_lake_mi.pdf
- https://s3.amazonaws.com/wewuxuviwar/moore_norman_technology_center_job_postings.pdf
- https://s3.amazonaws.com/dazifozixawus/vocally_inspired_performers.pdf
- https://s3.amazonaws.com/suxiweke/letter_formation_alphabet_handwriting_practice_sheet.pdf
- https://s3.amazonaws.com/ruzumeb/90698594387.pdf
- https://s3.amazonaws.com/matogapibelifiv/42nd_amendment.pdf
- https://uploads.strikinglycdn.com/files/264b9899-24ce-422f-b0de-f06c7351df69/5641293839.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000cbac.bin4cc7ea093e09cb36cadc534a026c9c6697dfe878c2d3f249410fd6b4359fcd83 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCBAC | 5408 bytes |
font_01_sfnt_off0000ddf6.bin11a2ffc1efaefa73d82bad264a25c60134937896a39f779dbbc4d5400ba2b8ae |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDDF6 | 10772 bytes |
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